swift
Downgrade the error about `#isolation` in `@_unsafeInheritExecutor` when the concurrency library is old
#75347
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Downgrade the error about `#isolation` in `@_unsafeInheritExecutor` when the concurrency library is old #75347
DougGregor
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swiftlang:main
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DougGregor:isolation-in-unsafe-inherit-downgrade-old-concurrency-lib
Downgrade the error about `#isolation` in `@_unsafeInheritExecutor` w…
d4ba753a
DougGregor339 days ago
@swift-ci please smoke test
hborla
approved these changes
on 2024-07-18
hborla339 days ago
Heh. This looks safe.
DougGregor
deleted the isolation-in-unsafe-inherit-downgrade-old-concurrency-lib branch 339 days ago
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The introduction of the error concerning use of
#isolationwithin an@_unsafeInheritExecutorfunction was carefully staged between the concurrency library and compiler to avoid breaking source compatibility. However, it is a source compatibility break when dealing certain revisions of the concurrency library that adopted#isolationprior to the compiler error. Detect when the _Concurrency library doesn't have the necessary workarounds in it and downgrade the error to a warning.Fixes rdar://132023573.